[Iaude] MPEC B66: COMET P/2019 A7 (PANSTARRS)

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Wed Jan 23 16:25:17 EST 2019


M.P.E.C. 2019-B66                                Issued 2019 Jan. 23, 20:35 UT
 
     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714


                          COMET P/2019 A7 (PANSTARRS)

     Y. Ramanjooloo (F51) reported that this object had a FWHM of ~1".6
(compared to 1".2 for nearby stars) and a fuzzy extension of ~3" in P.A. 290.
R. Weryk and R. Wainscoat (568) noted that the object had a FWHM of 0".91
(compared to 0".66 +/- 0".02 for nearby stars) and evidence for a faint tail,
extending to the northwest for more than 5".  R. S. McMillan (691) noted faint
cometary features, that were too faint to measure precisely, on several nights.
 
Observations:
    PK19A070  C2017 10 03.43712500 31 58.681+33 23 23.36         21.1 GVEB066F51
    PK19A070  C2017 10 03.44861100 31 58.067+33 23 21.02         21.1 GVEB066F51
    PK19A070  C2017 10 03.46010300 31 57.464+33 23 18.54         21.7 GVEB066F51
    PK19A070  C2017 10 03.47156400 31 56.871+33 23 16.09         21.8 GVEB066F51
    PK19A070  C2017 10 27.27711900 14 26.157+30 46 48.54         21.5 GVEB066F51
    PK19A070  C2017 10 27.28809400 14 25.774+30 46 42.85         21.7 GVEB066F51
    PK19A070  C2017 10 27.29910600 14 25.387+30 46 37.14         21.8 GVEB066F51
    PK19A070  C2017 10 27.31012900 14 25.018+30 46 31.35         21.7 GVEB066F51
    PK19A070  C2017 11 09.37853200 09 29.350+28 45 18.41         22.1 GVEB066F51
    PK19A070  C2017 11 09.39043400 09 29.157+28 45 11.38         21.8 GVEB066F51
    PK19A070  C2017 11 09.40228400 09 28.991+28 45 04.65         21.5 GVEB066F51
    PK19A070  C2017 11 09.41417200 09 28.817+28 44 57.86         21.4 GVEB066F51
    PK19A070* C2019 01 08.37792 08 25 17.155+10 02 51.25         20.4 wUEB066F51
    PK19A070  C2019 01 08.38898 08 25 16.570+10 02 49.31         20.6 wUEB066F51
    PK19A070  C2019 01 08.40002 08 25 15.978+10 02 47.49         20.4 wUEB066F51
    PK19A070  C2019 01 08.41110 08 25 15.386+10 02 45.70         20.4 wUEB066F51
    PK19A070 ^C2019 01 09.50094208 24 18.003+09 59 45.71         20.24GVEB066568
    PK19A070 ^C2019 01 09.50212108 24 17.939+09 59 45.52         20.24GVEB066568
    PK19A070 ^C2019 01 09.50330108 24 17.874+09 59 45.33         20.31GVEB066568
    PK19A070 9C2019 01 11.03201 08 22 56.57 +09 55 42.9          20.2 GUEB066G40
    PK19A070 9C2019 01 11.04973 08 22 55.48 +09 55 40.1                UEB066G40
    PK19A070 KC2019 01 11.05115 08 22 55.33 +09 55 39.8          19.7 RrEB066106
    PK19A070 KC2019 01 11.05452 08 22 55.21 +09 55 37.0          20.1 RrEB066106
    PK19A070  C2019 01 11.27504 08 22 43.39 +09 55 05.7          20.1 GVEB066I52
    PK19A070  C2019 01 11.27881 08 22 43.30 +09 55 04.8          20.8 GVEB066I52
    PK19A070  C2019 01 11.28428 08 22 42.91 +09 55 04.6          20.4 GVEB066I52
    PK19A070  C2019 01 11.28874 08 22 42.70 +09 55 03.3          20.6 GVEB066I52
    PK19A070 KC2019 01 12.04778 08 22 01.53 +09 53 08.8          20.1 RqEB066L27
    PK19A070 KC2019 01 12.06768 08 22 00.42 +09 53 05.4          20.3 RqEB066L27
    PK19A070 KC2019 01 12.08757 08 21 59.28 +09 53 02.5          19.9 RqEB066L27
    PK19A070 HC2019 01 12.31146 08 21 47.30 +09 52 30.6          19.9 RoEB066691
    PK19A070 HC2019 01 12.31924 08 21 46.89 +09 52 29.3          19.9 RoEB066691
    PK19A070 HC2019 01 12.32703 08 21 46.42 +09 52 28.2          19.8 RoEB066691
    PK19A070  C2019 01 12.48054 08 21 37.85 +09 52 05.3          20.0 GVEB066I52
    PK19A070  C2019 01 12.48481 08 21 37.67 +09 52 05.0          19.9 GVEB066I52
    PK19A070  C2019 01 12.48927 08 21 37.36 +09 52 04.4          19.9 GVEB066I52
    PK19A070 1C2019 01 12.57018 08 21 33.27 +09 51 57.0                VEB066Q62
    PK19A070 1C2019 01 12.57334 08 21 33.10 +09 51 56.5                VEB066Q62
    PK19A070 1C2019 01 12.57649 08 21 32.92 +09 51 55.5          19.6 GVEB066Q62
    PK19A070 1C2019 01 13.63649 08 20 34.83 +09 49 24.9                VEB066Q62
    PK19A070 1C2019 01 13.64122 08 20 34.55 +09 49 24.3          19.9 GVEB066Q62
    PK19A070 KC2019 01 14.95529608 19 22.20 +09 46 17.8          20.0 GVEB066L01
    PK19A070 KC2019 01 14.97688108 19 21.00 +09 46 15.3          19.9 GVEB066L01
    PK19A070 HC2019 01 15.42716 08 18 55.84 +09 45 17.8          20.2 RoEB066691
    PK19A070 HC2019 01 15.44191 08 18 55.03 +09 45 15.3          20.0 RoEB066691
    PK19A070 HC2019 01 15.45660 08 18 54.16 +09 45 13.6          20.4 RoEB066691
    PK19A070 KC2019 01 17.20300 08 17 17.18 +09 41 33.5          19.9 RoEB066691
    PK19A070 KC2019 01 17.20974 08 17 16.82 +09 41 32.9          20.1 RoEB066691
    PK19A070 KC2019 01 17.21652 08 17 16.42 +09 41 31.6          20.1 RoEB066691
    PK19A070  C2019 01 17.27775 08 17 12.89 +09 41 24.6          20.3 GVEB066I52
    PK19A070  C2019 01 17.28270 08 17 12.61 +09 41 23.7          19.7 GVEB066I52
    PK19A070  C2019 01 17.28723 08 17 12.40 +09 41 22.9          19.7 GVEB066I52
    PK19A070  C2019 01 17.29836 08 17 11.73 +09 41 22.0          20.6 GVEB066I52
 
Observer details:
106 Crni Vrh.  Observer S. Maticic.  0.6-m f/3.3 Deltagraph + CCD.
568 Mauna Kea.  Observers R. Wainscoat, D. Woodworth, A. Petric.  Measurers
    R. Weryk, R. Wainscoat.  3.6-m Canada-France-Hawaii Telescope + CCD.
691 Steward Observatory, Kitt Peak-Spacewatch.  Observers R. A. Mastaler,
    J. V. Scotti, R. S. McMillan.  0.9-m f/3 reflector + CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
    E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
    Y. Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, L. Denneau,
    J. Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m
    Ritchey-Chretien + CCD.
G40 Slooh.com Canary Islands Observatory.  Observer B. Lutkenhoner.  0.5-m
    f/6.8 Corrected Dall-Kirkham + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers B. M. Africano,
    D. C. Fuls.  Measurers B. M. Africano, E. J. Christensen, G. A. Farneth,
    D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski,
    S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.  1.0-m reflector
    + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, F. Valentine.
    Measurer K. Korlevic.  1.0-m f/2.9 reflector + CCD.
L27 29PREMOTE Observatory, Dauban.  Observer J.-F. Soulier.  0.20-m f/4
    Newtonian reflector + CCD.
Q62 iTelescope Observatory, Siding Spring.  Observer H. Sato.  0.51-m f/6.8
    astrograph + CCD + f/4.5 focal reducer.
 
Orbital elements:
    P/2019 A7 (PANSTARRS)
Epoch 2018 Jan. 2.0 TT = JDT 2458120.5
T 2018 Jan. 8.32972 TT                                  MPCW
q   2.6760267            (2000.0)            P               Q
n   0.17309771     Peri.  119.60838     +0.72375623     -0.62139623
a   3.1886621      Node   280.52535     +0.47888018     +0.76538701
e   0.1607682      Incl.   17.77068     +0.49684071     +0.16747969
P   5.69
>From 53 observations 2017 Oct. 3-2019 Jan. 17, mean residual 0".4.

    P/2019 A7 (PANSTARRS)
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2023 Sept. 12.15086 TT                                MPCW
q   2.6737745            (2000.0)            P               Q
n   0.17294494     Peri.  118.76995     +0.73384142     -0.60943413
a   3.1905396      Node   280.42869     +0.46651628     +0.77324454
e   0.1619679      Incl.   17.76732     +0.49380090     +0.17516541
P   5.70
>From 53 observations 2017 Oct. 3-2019 Jan. 17, mean residual 0".4.

    P/2019 A7 (PANSTARRS)
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5
T 2018 Jan. 7.77078 TT                                  MPCW
q   2.6752539            (2000.0)            P               Q
n   0.17318433     Peri.  119.46865     +0.72527848     -0.61959186
a   3.1875988      Node   280.52319     +0.47696568     +0.76658612
e   0.1607307      Incl.   17.77396     +0.49646235     +0.16867617
P   5.69
>From 53 observations 2017 Oct. 3-2019 Jan. 17, mean residual 0".4.

Ephemeris:
    P/2019 A7 (PANSTARRS)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2018 12 24    08 36 51.1 +10 56 46   2.1659  3.0062   142.5    11.5  20.0
...
2019 01 08    08 25 36.7 +10 03 56   2.0909  3.0294   159.0     6.7  19.9
...
2019 01 16    08 18 24.2 +09 44 05   2.0763  3.0418   166.6     4.3  19.9
...
2019 01 22    08 12 47.7 +09 32 49   2.0779  3.0511   169.7     3.3  19.9
2019 01 23    08 11 51.6 +09 31 13   2.0792  3.0527   169.8     3.3  19.9
2019 01 24    08 10 55.7 +09 29 42   2.0808  3.0543   169.7     3.3  19.9
...
2019 01 30    08 05 25.9 +09 22 10   2.0968  3.0636   166.6     4.3  20.0
...
2019 02 07    07 58 37.3 +09 15 52   2.1347  3.0761   159.1     6.6  20.0
...
2019 02 22    07 48 42.1 +09 12 20   2.2523  3.0997   143.0    11.1  20.2

Gareth V. Williams           (C) Copyright 2019 MPC           M.P.E.C. 2019-B66



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